Display panel with a transitional graphical user interface



FIG. 1 is a front view of a display panel with a transitional graphical user interface;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof; and,

FIG. 5 is a fifth image thereof.

The broken lines showing an electronic device illustrate environmental subject matter, whereas the broken lines showing elements of the graphical user interface illustrate portions of the article. No subject matter depicted in broken lines form part of the claimed design.

The appearance of the transitional image transitions sequentially between the images shown in FIGS. 1-5. The process or period in which one image transitions to another image forms no part of the claimed design. 

CLAIM We claim the ornamental design for a display panel with a transitional graphical user interface, as shown and described. 